I tried to implement the logic which is needed to redirect when page loading. I have used EJB (3.0) and JSF (2.1) technologies here.
Initially I used @PostConstruct method with @ViewScoped in ManagedBean.
Initially I used @PostConstruct method with @ViewScoped in ManagedBean.
import javax.annotation.PostConstruct;
import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ViewScoped;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
@ManagedBean(name = "redirectTest")
@ViewScoped
public class RedirectTest implements Serializable {
@PostConstruct
public void init() {
if (isRedirect) {
ExternalContext context = FacesContext.getCurrentInstance()
.getExternalContext();
try {
context.redirect(context.getRequestContextPath()
FacesContext.getCurrentInstance().responseComplete();
} catch (IOException e) {
e.printStackTrace();
}
}
}
It throws following exception
com.sun.faces.mgbean.ManagedBeanCreationException: An error occurred performing resource injection on managed bean redirectTest
at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:229)
....
Caused By: com.sun.faces.spi.InjectionProviderException: com.oracle.pitchfork.interfaces.LifecycleCallbackException: Failure to invoke public void redirectTest.init() on bean class class redirectTest with args: null
at com.bea.faces.WeblogicInjectionProvider.invokePostConstruct(WeblogicInjectionProvider.java:40)
at com.sun.faces.mgbean.BeanBuilder.invokePostConstruct(BeanBuilder.java:223)
...
Caused By: com.oracle.pitchfork.interfaces.LifecycleCallbackException: Failure to invoke public void redirectTest.init() on bean class class redirectTest with args: null
at com.oracle.pitchfork.inject.Jsr250Metadata.invokeLifecycleMethod(Jsr250Metadata.java:395)
...
Caused By: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
..
Caused By: java.lang.IllegalStateException: Response already committed
at weblogic.servlet.internal.ServletResponseImpl.objectIfCommitted(ServletResponseImpl.java:1651)
...
(1) Bytes already sent to response
(2) Point when managedbean created ( if @ViewScoped )
It can not be solved even close the response manually using
FacesContext.getCurrentInstance().responseComplete();
Use the preRenderView method execute during the beginning of the render response phase, right before the HTML is been rendered. The @PostConstruct is intented to perform actions directly after bean's construction and the setting of all injected dependencies and managed properties such as @EJB, @Inject, @ManagedProperty, etc. The injected dependencies are namely not available inside the bean's constructor. This will thus run only once per view, session or application when the bean is view, session or application scoped. The preRenderView event is invoked on every HTTP request (yes, this also includes ajax requests!).
Solution : preRenderView
By using preRenderView will give the solution for this scenario.
Solution : preRenderView
By using preRenderView will give the solution for this scenario.
Refer this post about best place for the f:metadata element : post
There is the issue , preRenderView might calling more than one time when using with . This can be avoid using
"f:viewAction action="#{defaultNewQuestionHandler.init}" onPostback="false" "
There is the issue , preRenderView might calling more than one time when using with . This can be avoid using
public void init(){
if (!FacesContext.getCurrentInstance().isPostback(){
//put initView codes here
}
"f:viewAction action="#{defaultNewQuestionHandler.init}" onPostback="false" "
